he saw obama as the slight favorite, now he says "i'm perplexed, i just don't know." rothenberg feels much the same. the words he uses are "feeling flummoxed." he says there were two times this year when the race seemed to change. the president started gaining after the democratic convention; romney began to climb after the first debate. but is he still climbing? rothenberg says he just doesn't know. both men say the undecided vote now is probably between 3% and 5%. what all this suggests to me, scott, is that this election comes down to turnout. the candidate who gets his people to the polls is the candidate who's going to win. >> pelley: thanks, bob. don't be flummoxed on sunday. join bob on "face the nation." his guests will include republican senator john mccain of arizona. the meningitis outbreak has claimed a 25th life today. 331 cases have now been reported in 18 states. we knew that the victims were victims of contaminated steroids produced by a massachusetts pharmacy, but what the f.d.a. told us today about that pharmacy came as quite a surprise. here's dr. j